File indexing completed on 2024-05-12 05:33:54

 // SPDX-FileCopyrightText: 2010 by Dario Freddi <drf@kde.org>
 // SPDX-FileCopyrightText: 2015 by Kai Uwe Broulik <kde@privat.broulik.de>
 // SPDX-FileCopyrightText: 2015 by Martin Gräßlin <mgraesslin@kde.org>
 // SPDX-FileCopyrightText: 2022 Aleix Pol Gonzalez <aleixpol@kde.org>
 //
 // SPDX-License-Identifier: LGPL-2.1-or-later
 
 #include "xcbdpmshelper_p.h"
 
 #include <QGuiApplication>
 #include <QtGui/private/qtx11extras_p.h>
 
 #include <kscreendpms_debug.h>
 
 #include <xcb/dpms.h>
 
 template<typename T>
 using ScopedCPointer = QScopedPointer<T, QScopedPointerPodDeleter>;
 
 XcbDpmsHelper::XcbDpmsHelper()
     : AbstractDpmsHelper()
 {
     auto *c = QX11Info::connection();
 
     xcb_prefetch_extension_data(c, &xcb_dpms_id);
     auto *extension = xcb_get_extension_data(c, &xcb_dpms_id);
     if (!extension || !extension->present) {
         qCWarning(KSCREEN_DPMS) << "DPMS extension not available";
         setSupported(false);
         return;
     }
 
     ScopedCPointer<xcb_dpms_capable_reply_t> capableReply(xcb_dpms_capable_reply(c, xcb_dpms_capable(c), nullptr));
     setSupported(capableReply && capableReply->capable);
 
     // Disable a default timeout, if any
     xcb_dpms_set_timeouts(QX11Info::connection(), 0, 0, 0);
 }
 
 XcbDpmsHelper::~XcbDpmsHelper() = default;
 
 void XcbDpmsHelper::trigger(KScreen::Dpms::Mode mode, const QList<QScreen *> &screens)
 {
     setHasPendingChanges(true);
     auto *c = QX11Info::connection();
 
     if (screens != qGuiApp->screens()) {
         qCWarning(KSCREEN_DPMS) << "DPMS actions are applied to all screens on X11";
     }
 
     ScopedCPointer<xcb_dpms_info_reply_t> infoReply(xcb_dpms_info_reply(c, xcb_dpms_info(c), nullptr));
 
     if (!infoReply) {
         qCWarning(KSCREEN_DPMS) << "Failed to query DPMS state, cannot trigger";
         return;
     }
 
     xcb_dpms_dpms_mode_t level = XCB_DPMS_DPMS_MODE_ON;
     switch (mode) {
     case KScreen::Dpms::Toggle:
         if (infoReply->power_level == XCB_DPMS_DPMS_MODE_ON) {
             level = XCB_DPMS_DPMS_MODE_OFF;
         } else {
             level = XCB_DPMS_DPMS_MODE_ON;
         }
         break;
     case KScreen::Dpms::Off:
         level = XCB_DPMS_DPMS_MODE_OFF;
         break;
     case KScreen::Dpms::Standby:
         level = XCB_DPMS_DPMS_MODE_STANDBY;
         break;
     case KScreen::Dpms::Suspend:
         level = XCB_DPMS_DPMS_MODE_SUSPEND;
         break;
     case KScreen::Dpms::On:
         level = XCB_DPMS_DPMS_MODE_ON;
         break;
     }
 
     if (!infoReply->state) {
         xcb_dpms_enable(c);
     }
 
     xcb_dpms_force_level(c, level);
 
     setHasPendingChanges(false);
 }